Lasting machine



- c. w. BAKER Dec. 14, 1948.

LASTING MACHINE Filed May 16, 1945 4 Sheets-Shee.t l

lnven for Cora/in WBa/ter c. w. BAKER LASTING MACHINE Dec. 14, 1948.

Filed Ma 16 .1945

4 Sheets-Sheet 3 Inventor Coruzz'rz WBa ker- 14,1948. w, ER 2,455,969

' r LASYT'ING. MACHINE Filed May 16, 1945 4 Sheets -Sheet 4 In verz zor Cora/in WBa/rer Patented Dec. 14, 1948 UNITED STATES PATENT OFFICE Corwin W. Baker, Stoneham, Mass., assignor to United Shoe Machinery Corporation, Flemington, N. J., a corporation of New Jersey Application May 1.6, 1945, Serial No. 593,981

This invention relates to machines for lasting shoes and particularly to improvements in lasting machines of the types shown and described in United States Letters Patent No..2,39'7,369, granted March 26, 1946, on an application filed in the name of Edward Quinn and Napoleon A. Monfils. It should be understood, however, that features of the present invention are notnecessarily limited intheir utility to use in machines of the aforementioned type.

In the machine of the mentioned patent, the shoe is fed along continuously and the stock to be lasted is progressively tensioned in a direction substantially normal to the shoe bottom, movement of the shoe in this direction being prevented by a bottom rest, and then drawn inwardly from the edge of the shoe and toward lasted position, by means of the frictional drag imposed thereon by the action of a driven roll against the operating surface of which the lasting margin of the stock is yieldingly held by, means of a pressure member that partially surrounds the roll. As the lasting margin emerges from between the roll and pressure member, it is immediately wiped inwardly from the edge of the shoe and pressed firmly into lasted position against the bottom of the shoe by means of a wiper having a continuous inwiping action. The lasting margin of the stock as well as the margin of the shoe bottom having been previously rendered adhesivathis wiping and pressing action effectively secures the lasting margin of the stock to the shoe bottom in lasted position.

An object of this invention is to provide a novel and improvedmeans for yieldinglyholding the lasting margin of the stock against the roll and with this object in view the herein disclosed pressure member is formed with angularly disposed, substantially fiat, operating faces which are so arranged as to press the lasting margin of the stock against the roll at two circumferentially spaced locations, one of which is substantially in line with the edge of a shoe being operated upon, while the other is positioned inwardly from the edge of the shoe. Preferably, and as herein illustrated, these two operating faces are formed as separate elements which are so constructed and arranged as to be independently movable awayfrom the roll against the action of yielding means thus to permit the passage between the roll end pressure member of portions of stock that vary in thickness without the loss of'pressure thereon at either of said circumferentially spaced locations.

It is also an object of this invention to pro- 8 Claims. (Cl. 12--1) vide means for facilitating the swinging of a shoe being operated upon ina plane normal to the bottom of theshoe so as properly to present the shoe to the lasting and wiping means. To this end, means are provided for periodically moving the pressure member in a direction away from the rollthus to free the stock from pressure, at least at that location on the roll which is adjacent to the edge of the shoe. With the stock thus momentarily freed at this location, the position of the shoe may be changed, in the direction mentioned, without danger of forming wrinkles on the side of the shoe. However, with the pressure'member provided with a separate hinged portion for holding the stock against the roll at a location inwardly from theedge of the shoe, this movement of the pressure member need not be, and preferably is not, sufficient to free the stock at this location, since the stock at this point can accommodate the swinging movement of the shoe. Preferably, and as shown, the aforementioned movement of the pressure member is effected Icy-rapidly vibrating the pressure member in the direction mentioned.

These and other objects of the invention will be apparent from the following detailed description of the embodiment shown in the drawings and will be pointed out in the claims.

In the drawings,

Fig. 1 is a view in side elevation of a machine embodying this invention;

Fig. 2 is a view in front elevation of the machine shown in Fig. 1, on an enlarged scale and with certain parts in section; 4

Fig. 3 is a plan view of the operating elements of the machine;

- .Fig, 4 is a detail view of a portion of the man Fig. 5 is a sectional view taken on the line V-V of Fig. 4 and looking in the direction of the arrows; and

Figs. 6 and '7 are schematic views of the operating elements of the machine showing these elements in two different positions- Referring to the drawings, the illustrated machine is provided with a driven tensioning and feeding roll ill, having an operating face i i for engaging the lasting margin of the stock; a pressure member,;or sleeve, comprising a body portion {2 and a hinged part 14, for holding the stock against the operating faceof the roll at two locations spaced circumferentially thereof; an endless fiexible wiping element, comprising a chain l6; and an edge gage roll I8 and a bottom rest 20.

The roll I0 is secured-to the lower end of a shaft 30 which is journaled in a bearing block 32. This bearing block has a T-shaped arcuate rib 34 which is slidably mounted in a correspondingly shaped arcuate groove 35 formed in a supporting bracket 36, Figs. 2 and 3. The bracket 36 is likewise provided with a T-shaped arcuate rib 38 that is slidably mounted in a correspondingly shaped :arcuate groove 40 in a plate 42. These arcuate ribs and grooves are arranged to permit the varying of the inclination of the shaft 30, together with the roll I0, with respect to a horizontal plane passing through the bottom of the roll, and clamping bolts 43 and 45 are provided for locking the bearing block 32 and supporting bracket 36, respectively, in adjusted position. The are of the rib 38 and groove 40 is swung about a center on a vertical line tangent to the right-hand side of the roll I0, as viewed in Fig. 3, while the arc of the rib 34 and groove 35 is swung from a center on a horizontal line tangent to theright-hand side of the bottom face of the roll, as viewed in Fig. 2. Thus, when the inclination of the roll :is varied as above explained, the vertical position of the aforementioned part of the roll will not be altered.

The plate 42 is secured to a slide 44 by means of a tongue 46 and groove 48 and clamping bolts 50 which pass through elongated slots I in the plate. When these bolts are loosened the roll may be adjusted toward or away from the wiping chain I6.

The slide 44 is supported in a guide bracket 52 which is secured to a frame member 54 that is mounted on the top of a column 56 of suitable height, Fig. 1. A cam roll 58, carried by the slide 44, engages a cam groove 60 formed in a cam bar 62 which is mounted for vertical sliding movement in the bracket between rolls 64, 64. Vertical movement of the cam bar will move the bearing block 36 and roll I0 forwardly or rearwardly of the machine for purposes which will presently appear.

The shaft 30, and roll I0, are driven from a main drive shaft 66 which is journaled in the upper end of the frame 54 and provided with a belt pulley I0. The shaft 68 extends forwardly and into a gear housing I2, secured to the frame 54 by bolts 14, where it drives an idler gear I6 through helical gear I8, Fig. 2. Formed integrally with this idler gear '16 is a gear, not shown, which meshes with a gear 82, secured by setscrew 84 to a vertical shaft 86 that is journaled in the housing 12 in anti-friction bearings 88 and -90. The gear 82 drives, through a reduction train comprising gears 92, 94 and 96, a shaft 98, likewise journaled in the housing and projecting through its lower wall. This shaft is connected to the shaft 30 by means of an extensible shaft assembly indicated by the reference character I00 and including universal joints I02 and I04. A sheet metal guard housing I06 surrounds the extensible shaft I00, as shown in Figs. 1 and 2.

The body portion I2 of the pressure member, or sleeve, is secured, by means of a tongue and groove and a clamping bolt I I0, to the lower end of an arm I I2 which is pivotally mounted on the bearing block 32 by means of a pin H4 that extends through spaced flanges I I6, see Fig. 4. The bolt I I0 extends through an elongated slot H8 in the body portion I2, which, when the bolt is loosened, permits adjustment of the pressure member, or sleeve, laterally of the machine and relatively to the roll I0. The hinged part I4 is pivotally mounted on the body portion I2 by means of a pin I20 and is yieldingly ur in a counterclockwise direction about the pin I20, Figs. 6 and '7, by a compression spring I22 which is fitted in recesses I24, I26 in the body portion and hinged part, respectively. A rod I30 having a spherical end I32 is connected to the arm H2 by means of a plate I34 and screw I36. This rod extends rearwardly of the machine from the arm slit. and passes through an aperture I38 in a bracket member I40 that is secured to the frame 54 by means of bolts I42, I42, Figs. 1, 3 and 6. Interposed between a collar I44, adjustably secured to the rod I30 by means of a setscrew I46, and the bracket I40 is a compression spring 148.

The cam bar 62 is connected, by means of a rod I50, to a treadle I52 which is normally elevated by means of a spring I54. Depression of this treadle will move the cam bar downwardly to the position shown in Fig. 1 in which 1305].- tion of the cam bar the :slide 44 and roll I0 will be moved .rearwardly of the machine. As the roll goes back, the arm 1 I2 is swung about the pivot pin E44 by the action of the rod 1-30 and compression spring I48 until the pressure membell, ors leeve, nearly engages the roll, after which the :ceritinu'ed movement of the roll will oomp-rze'ss the spring 448. In order to prevent actual contact of the roll on the sleeve, a stop screw 455 is provided, see Figs. 3 and '4, this screw being so set as to engage the bearing block 3-2 and hold the sleeve spaced irom'the roll a few thousandths of an inch. Fig. 3 shows the roll and sleeve in the positions assumed when the treadle is thus depressed and with the spring 148 under compression; while '7 shows these parts in the same position and with the lasting margin M of the cover of :a platform shoe S pressed against the roll by the pressure member. Upon release of the 'tr'eadle it wiil be moved upwardiy by the spring i54-and a reverse :action will take place; the pressure member, "or sleeve, :ioilowirrg the forward movement of the roll, which now occurs, until engagement of a collar I356, on the rod I30, with the bracket 441i), arrests forward movement of the "pressure member. Thereafter, the .roll moves away from the pressure member "until the parts assume the positions shown in Fig. 6.. The spring I22 is weaker and less eifiectiv-e than the spring I48 and the pressure member is so adjusted relatively to the roll that the hinged part I4 will contact the lasting margin M just before the fixed part "I2 does. Thu-s the spring I22 will be slightly compressed, when the parts are in the position shown in 'Fig. 7 and the hinged part 54 will be movedaway from an abutment surface I5J on the body portion I2, Fig. .7.

The shaft 30' carries, .just below the bearing block 32., a four-pointed cam I60 which is in alinement with .a cam roll I62 mounted on the lower end of an arm I64 which is pivoted on the arm H2 by means of a pin I66 which extend-s between two ears I68, 1 68 on the arm, see Figs. 3 and 4. Above the pin I66, a compression spring I'Iii is interposed between the upper end of the arm I64, which spring holds the arm against a stop screw I12. By suitable adjustment or the stop screw 112, the roll I62 may be moved into engagement with the cam I60 and, when this is done, the arm H2 will be moved rearwardly by each high point of the cam and the body portion 42 of the pressure member, or sleeve, will be moved away from the roll four times during each revolution of the roll. When the body portion of the pressure member, or

masses roll, the hinged part willstill maintain its pres-- sure against the lasting margin M since the separating movement,'-"efiectedby'the cam I60, is not sufilcientto close the gap between the hinged part I4 and.the'abutment-surface I5'I'on the body portion I2, but only enough to relieve the pressure of surface'I2 on the lasting margin M.

The wiping chain I6 is carried in a housing I80 which ismountedfor angularadjustment about a boss I82 on the lower face of-the housing I2, this boss being centered abo'utthe axis of the shaft 86, and two clamping bolts I84, I84 are provided for holding the housing and chain in adjusted position. The chain'runs over two idler sprockets I86, I88, a take-upsprocket I90, and a driving spocket I92, see Fig. 2. The driving sprocket I92 is mounted on a shaft I94, journaled in the housing I80, and carrying a bevel gear I96 which meshes with another bevel gear I91 on the shaft 86. Thetake-up sprocket I90 is mounted on an arm- I98 which is adjustably secured to the'housin'g I80 by-means of a clamping bolt 200'. The two idle'r sprockets I86 and I88 are journaled on the lower end of 'a slide 202 which is mounted for adjustment vertically of the housing I80'by means of a clamping bolt 204 that passes through-an elongated slot 206 in the housing I80.

The edge gage roll I8 is journaled on a stud 2I0 carried by a block 2I2 which is mounted for adjustment forwardly and'rearwardly of the machine by means of a clamping "bolt 2I6 which passes through a slot 2I'4 in an arm 2I8, Figs. 6 and 7. This arm is likewise mounted for adjustment, laterally of the machine, by means of a clamping bolt 222 and slot 220 on a bar 224, and this bar is mounted'for adjustment vertically of the machine} by means of abolt 232 and slot 234, on a slide 236. The slide 236is mounted for reciprocating movement in" a guide bracket 226 on the frame member-54 and carries a cam roll 220 which engages 'a camgroove 2-30 in the cam bar 52. i W

The bottom rest 20 ismounted on the bearing block 32 for angular adjustment about the axis of the roll I0 by means'of an "arcuate boss 240 on the bearing block, and a bolt 242 which passes through a slot 244 in the upperend of the bottom rest. e l

The machine above described operates, in general, in the same manner as the machine of the above-mentioned patent, that is to say, when the treadleis depressed and the o'perating'elements are inthe position shown in Fig. 7 the operating surface II of the inclined roll I0. exerts a frictional dragon the lasting'margin of the stock, e. g., the lasting marginlVI of the cover of a platform shoe S, shown in broken lin'es in Fig. 2, having a platform? and an upper U mounted on a last L. It will be understood, of course, like the machine of the'abo've-mentioned patent, that the herein illustrated machine may be used for operating on thelasting margin of the upper of a conventional shoe. This frictional drag, which is enhanced by providing the surface with a plurality of projections; illustrated, diagrammatically, in the drawings by crossed'lines, see Fig. 4, has a vertical component which tends to tension the lasting margin in a direction substantially perpendicular to the bottombf the shoe and a horizontal component which tends to'feed the shoe. Also, due to the fact that the lasting margin is wrapped, partial-1y, around the roll by the pressure member or sleeve, 'thisfrictional drag 6 has a' component that tends to draw the lasting margin inwardly from the edge of the shoe and over the shoe bottom. The operator merely supports the shoe and holds it against the edge gage roll I8 as it is fed along by the roll, tipping the shoe in a vertical plane to accommodate the curvature of the shoe bottom and so as to hold the shoe bottom always in engagement with the wiper.

chain I6 and the shoe bottom rest 20; The operator also swings the shoe in a horizontal plane so as to keep a line tangent to the edge of the shoe at the point of operation of the roll substantially normal to a vertical plane extending from. the front to the back of the machine.

As this tensioning, overdrawing and feeding action progresses along the marginal edge of the shoe, the tensioned and overdrawn lasting margin is immediately wiped down onto the shoe bottom by the chain wiper I6 which, as can be seen in Fig. .7, has a component of movement inwardly from the edge of the shoe and lengthwise of the shoe in the direction of feed, see the arrow in Fig. 7. The relative values of these components of the Wiping action may be readily varied to accommodate different working conditions by loosening the bolts I84, I84 and rotating the housing I about the boss I82, the center of which is substantially in line with the edge of the shoe so that such rotary adjustment will not alter the position of the chain with respect to the roll and sleeve.

The lasting margin of the stock is held against the roll by the pressure member, or sleeve, at two points spaced circumferentially of the roll, i. e., at the point of tangency of the flat surface of the body portion I2 and at the point of tangency of the hinged part I 4. The intensity of pressure exerted on the lasting margin by the body portion I2 of the sleeve is determined by the spring I48 and may be varied by changing the position of the collar I46. The pressure at the second point of contact is substantially constant and is determined by the strength of the spring I22 which is, as already noted, somewhat weaker than the spring I48. In adjusting the sleeve or pressure member on its supporting arm I I2, it is so positioned, laterally of the machine, that the body portion I2 and hinged part .14 would each contact the roll at about the same time should the treadle be depressed with no work in the machine. However, with the lasting margin M interposed between the roll and sleeve when the treadle is depressed the hinged part will strike the lasting margin first, due to the swinging movement of the-arm II2 about the pin IM, and when the treadle has been fully depressed the hinged part will have been swung about its pivot pin I20 so as to compress the spring I22.

By forming the sleeve in two angularly disposed parts, as shown, the friction between the outside surface of the moving lasting margin M and the stationary sleeve parts I2 and I4 is substantially reduced and the action of themachine considerably improved. The illustrated construction of the pressure member, or sleeve, also facilitates the operation of the machine on lasting margins which are non-continuous or lapped in the manner shown in Fig. 7. As will be apparent when the lapped portion enters betweenthe roll and body portion I2 of the sleeve, the

spring I48 will be somewhat compressed and the body portion will move awayfrom the roll enough to accommodate the greater thickness of the lasting margin at this point; However, the spring I 22 will now move the hinged part margin M, Fig. 7-.

contact on the roll and with the single thickness.

portion between. the first point of contact, i.. e., between the body portion i2 and the. roll, thespring M8 willmove the body portion toward the.

roll thus to maintain the pressure at this point. while, at the same time, the spring I22 will yield:

enough to allow the hinged part to move away; from the rolland accommodate the greater thickness of the lasting margin at that point. Thus thelapped portion may pass between the roll and sleeve without loss of pressure of the lastingmargin against the roll at either point.

As explained above, the operator holds. the bottom of the shoe always in engagement with the chain wiper Ifiandwith the bottom rest iii. In order to do this the operator must swing the shoe in a vertical plane to accommodate the curvature of" the shoe bottom. Where there are abrupt changes in the contour of the shoe bottom, asfor example along the shank portion, see Fig. 2, such swinging movement of the shoe maybe quite pronounced and so great that the portion of the lasting margin which is engaged by the body portion of the sleeve and roll cannot readily adjust itself in a vertical plane by slipping between the roll and sleeve, but instead will remain fixed, while the shoe is swung, and cause some wrinkling on the side of the platform P. To avoid this, the cam Hit] may be rendered operative to vibrate the body portion l2 and move it periodically away from the roll. Each time that the body portion is thus moved away from the roll the lasting margin will be momentarily freed at this point and may readily adjust itself in a vertical plane to accommodate the swingingmovement of the shoe in this direction. Since there are several points on the cam Hit! this actionwill occur a number of times for each revolution of the roll and an ample opportunity for the lasting margin to adjust itself to even the most rapid" swinging movement of the shoe is presented. During this vibrating of the body portion of the" sleeve, pressure of the hinged part is not entirely relieved. However, the lasting margin at this point is substantially parallel to the plane of the shoe bottom and can readily flex or bend without causing wrinkles at the side of the shoe. Under normal conditions and with the type of shoe usually encountered, the character of the shoe bottom is such that the lasting margin will accommodate itself by slipping between the roll and sleeve without the necessity for vibrating the sleeve because of the frictional action inherent in the machine. However, for extreme conditions of shoe-bottom curvature the use of the vibrating cam may be desired and this can be easily ob tained by a simple adjustment of the screw N22.

The edge gage roll I8 is adjusted vertically so as to contact the edge of the shoe just below the plane. of. the bottom face of the platform, see Fig, 2, and in a horizontal direction, toward the front'of the machine, so that it extends just a small distance beyond the point of contact of the body portion E2 of the sleeve with the lasting Thus the tensioning action of the roll on the lasting margin will be upwardly and outwardly away from the edge of the platform as is desirable. The edge gage roll is also positioned horizontally and in a directionextending, lengthwise of the. shoe in the direction of.

8% feed somewhat beyond the: point. of. contact. of the. body portioni of the. sleeve with. the lasting margirr soi asmoi? to; interfere with they tensioning action of theiroll'which: occurs: at this point. In this position:theedgegagezrollalsdholdsthe lasting' margin againsathe: edge of. theplatform and thus tends to'preventany loosening thereof before the lasting; margin is wiped down onto the shoe bottom. by the chain wiper l.6..

. Having describedithe invention-,what I claim as new; and desire: to" secureby Letters. Patent of the United. States: is:

la lasting; machine: having a. driven roll for applying a frictional: drag; on. the; lasting margin of: stock to-belasted,.and. a member for pressingsaid lasting; margini againstv the: roll, said member being; formed; with twoangularly. disposed operating-7 faces for engaging the stock at locations spaced cincumferentially of the roll.

2-. A lasting machine having a. driven roll for applying, a frictional drag-r on the. lasting margin of: stock to bellasted, andial member for pressing saidlasting; margin against: the: roll, said mem ber being formed withtwoangularly disposed operating.- faces so.- arranged. that onewill engage the stock at. at location on. the roll adjacent to the edge of; a. shoepresented to: themachine and. theother ata location inwardly from the edge of the shoe bottom.

3; A. lasting; machine having a. driven roll for applying a. trictionah drag: on. the; lasting margin 0t stockzt'oibewlasted and a member for pressing said lasting margin; against the-roll, said member comprising a body portion formed with a surfaceior engaging, the. stock at a! location: on the roll adjacent. to the edgeof. a, shoe presented to the machineaanda part having a surfacefor engaging the stoclratalocationinwardly from the edge oftheshoe; saidpartbeing yieldingly movable, relativetolsaid body portion; away from theroll'.

4'. A lasting. machine. having a. driven, rollfor applying. a frictional. drag; on the lasting margin of. stock. toibe. lasted. and. a member for yieldingly pressing said lasting margin against the roll, said member comprisinga body portion formedwith a surface for engaging. thestoclr. at.a. location. on the-roll. adjacentto. theedge. of a. shoe presented.

to. the. machine and. a part hinged. to the body portion, said. hinged. part. having.- a surface for engaging the stock at a location inwardly from theedge of the. shoe: and a. spring for swinging the; hinged. part toward the. roll..

5. A lasting machine; having, av driven roll. for

applying. a. frictional. drag on the lasting. margin; of stock to. be lasted, a cooperating member for pressing said. lasting. margin against the. roll,

means for. yieldingly urging, said member toward the. roll,.and means for periodically. moving said.

member. awayv from. the roll..

6. A lasting, machine. having a. driven roll for.

applying a. frictional. drag, on. the: lasting, margin. of stock to. belasted, a member for pressing the:

lasting marginagainsttharoll, said. member being; formed. with two. angularly disposed operating urging. said. member toward the. roll, andmeans. for periodically; moving said. member away fromthe; roll. g

7. A. lasting machine having; a: driven roll for applying a frictional drag; om the lasted margin: of stoclcto-belasted; a: member for: pressing. said.

lasting margintagainst tharoll; saidimember com.- prising a body pontiorr formedrwithn asunface for engaging; thest-oclrat a .location on the roll adiaapplyinga frictiqnaljdrag on the lastin cent to the edge of a shoe presented tothe machine and a partih'aving .a surface for ene ing the stock at allocation inwardly from the,

edge of the shoe, =s aid last-named part b yieldably movable relative to said body 11 away from the rollfmeans for yieldingly said member toward the roll, and mean of the shoe and a spring for swinging the hinged part toward the roll, means for yieldingly urging said member toward the roll, and means for periodicallymoving said member away from the periodically moving said member away fro'rn the' 8. A lasting machine; having a driven roll.

conwm w. BAKER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,400,816 Hadaway Dec. 20, 1921 1,541,875 Varney June 16, 1925 2,087,241 Bunker July 20, 1937 2,314,047 Kamborian Mar. 16, 1943 2,397,369

Quinn et al Mar. 26, 1946 

